1
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Li X, Wu X. The microspheres/hydrogels scaffolds based on the proteins, nucleic acids, or polysaccharides composite as carriers for tissue repair: A review. Int J Biol Macromol 2023; 253:126611. [PMID: 37652329 DOI: 10.1016/j.ijbiomac.2023.126611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/31/2023] [Accepted: 08/28/2023] [Indexed: 09/02/2023]
Abstract
There are many studies on specific macromolecules and their contributions to tissue repair. Macromolecules have supporting and protective effects in organisms and can help regrow, reshape, and promote self-repair and regeneration of damaged tissues. Macromolecules, such as proteins, nucleic acids, and polysaccharides, can be constructed into hydrogels for the preparation of slow-release drug agents, carriers for cell culture, and platforms for gene delivery. Hydrogels and microspheres are fabricated by chemical crosslinking or mixed co-deposition often used as scaffolds, drug carriers, or cell culture matrix, provide proper mechanical support and nutrient delivery, a well-conditioned environment that to promote the regeneration and repair of damaged tissues. This review provides a comprehensive overview of recent developments in the construction of macromolecules into hydrogels and microspheres based on the proteins, nucleic acids, polysaccharides and other polymer and their application in tissue repair. We then discuss the latest research trends regarding the advantages and disadvantages of these composites in repair tissue. Further, we examine the applications of microspheres/hydrogels in different tissue repairs, such as skin tissue, cartilage, tumor tissue, synovial, nerve tissue, and cardiac repair. The review closes by highlighting the challenges and prospects of microspheres/hydrogels composites.
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Affiliation(s)
- Xian Li
- Key Laboratory of Medical Cell Biology in Inner Mongolia, Clinical Medical Research Center, Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010050, China
| | - Xinlin Wu
- Department of Gastrointestinal Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China.
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2
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Singh H, Dan A, Kumawat MK, Pawar V, Chauhan DS, Kaushik A, Bhatia D, Srivastava R, Dhanka M. Pathophysiology to advanced intra-articular drug delivery strategies: Unravelling rheumatoid arthritis. Biomaterials 2023; 303:122390. [PMID: 37984246 DOI: 10.1016/j.biomaterials.2023.122390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 10/29/2023] [Accepted: 11/04/2023] [Indexed: 11/22/2023]
Abstract
Rheumatoid arthritis (RA) is one of the most prevalent life-long autoimmune diseases with an unknown genesis. It primarily causes chronic inflammation, pain, and synovial joint-associated cartilage and bone degradation. Unfortunately, limited information is available regarding the etiology and pathogenesis of this chronic joint disorder. In the last few decades, an improved understanding of RA pathophysiology about key immune cells, antibodies, and cytokines has inspired the development of several anti-rheumatic drugs and biopharmaceuticals to act on RA-affected joints. However, life-long frequent systemic high doses of commercially available drugs are currently a limiting factor in the efficient management of RA. To address this issue, various single and double-barrier intra-articular drug delivery systems (IA-DDSs) such as nanocarriers, microparticles, hydrogels, and particles-hybrid hydrogel composite have been developed which can exclusively target the RA-affected joint cavity and release the precisely controlled therapeutic drug concentration for prolonged time whilst avoiding the systemic toxicity. This review provides a comprehensive overview of the pathogenesis of RA and discusses the rational design and development of biomaterials-based novel IA-DDs, ranging from conventional to advanced systems, for improved treatment of RA. Therefore, this review aims to unravel the pathophysiology of rheumatoid arthritis and explore cutting-edge IA-DD strategies exploiting biomaterials. It offers researchers a consolidated and up-to-date resource platform to analyze existing knowledge, identify research gaps, and contribute to the scientific literature.
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Affiliation(s)
- Hemant Singh
- Biological Sciences and Engineering, Indian Institute of Technology, Gandhinagar, 382055, Gujarat, India; Department of Biology, Khalifa University, Main Campus, Abu Dhabi, 127788, United Arab Emirates
| | - Aniruddha Dan
- Biological Sciences and Engineering, Indian Institute of Technology, Gandhinagar, 382055, Gujarat, India
| | - Mukesh Kumar Kumawat
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Vaishali Pawar
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Deepak S Chauhan
- Faculty of Pharmacy, Université de Montréal, Montreal, Quebec, H3C 3J7, Canada
| | - Ajeet Kaushik
- NanoBioTech Laboratory, Department of Environmental Engineering, Florida Polytechnic University, Lakeland, FL- 33805, USA
| | - Dhiraj Bhatia
- Biological Sciences and Engineering, Indian Institute of Technology, Gandhinagar, 382055, Gujarat, India
| | - Rohit Srivastava
- Department of Biosciences and Bioengineering, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Mukesh Dhanka
- Biological Sciences and Engineering, Indian Institute of Technology, Gandhinagar, 382055, Gujarat, India.
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3
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Noddeland HK, Lind M, Petersson K, Caruso F, Malmsten M, Heinz A. Protease-Responsive Hydrogel Microparticles for Intradermal Drug Delivery. Biomacromolecules 2023. [PMID: 37307231 DOI: 10.1021/acs.biomac.3c00265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Protease-responsive multi-arm polyethylene glycol-based microparticles with biscysteine peptide crosslinkers (CGPGG↓LAGGC) were obtained for intradermal drug delivery through inverse suspension photopolymerization. The average size of the spherical hydrated microparticles was ∼40 μm after crosslinking, making them attractive as a skin depot and suitable for intradermal injections, as they are readily dispensable through 27G needles. The effects of exposure to matrix metalloproteinase 9 (MMP-9) on the microparticles were evaluated by scanning electron microscopy and atomic force microscopy, demonstrating partial network destruction and decrease in elastic moduli. Given the recurring course of many skin diseases, the microparticles were exposed to MMP-9 in a flare-up mimicking fashion (multiple-time exposure), showing a significant increase in release of tofacitinib citrate (TC) from the MMP-responsive microparticles, which was not seen for the non-responsive microparticles (polyethylene glycol dithiol crosslinker). It was found that the degree of multi-arm complexity of the polyethylene glycol building blocks can be utilized to tune not only the release profile of TC but also the elastic moduli of the hydrogel microparticles, with Young's moduli ranging from 14 to 140 kPa going from 4-arm to 8-arm MMP-responsive microparticles. Finally, cytotoxicity studies conducted with skin fibroblasts showed no reduction in metabolic activity after 24 h exposure to the microparticles. Overall, these findings demonstrate that protease-responsive microparticles exhibit the properties of interest for intradermal drug delivery.
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Affiliation(s)
- Heidi K Noddeland
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Marianne Lind
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Karsten Petersson
- Explorative Formulation & Technologies, CMC Design and Development, LEO Pharma A/S, 2750 Ballerup, Denmark
| | - Frank Caruso
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Martin Malmsten
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
- Department of Physical Chemistry 1, University of Lund, SE-22100 Lund, Sweden
| | - Andrea Heinz
- LEO Foundation Center for Cutaneous Drug Delivery, Department of Pharmacy, University of Copenhagen, 2100 Copenhagen, Denmark
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4
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Muir VG, Qazi TH, Weintraub S, Torres Maldonado BO, Arratia PE, Burdick JA. Sticking Together: Injectable Granular Hydrogels with Increased Functionality via Dynamic Covalent Inter-Particle Crosslinking. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2201115. [PMID: 35315233 PMCID: PMC9463088 DOI: 10.1002/smll.202201115] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/03/2022] [Indexed: 05/14/2023]
Abstract
Granular hydrogels are an exciting class of microporous and injectable biomaterials that are being explored for many biomedical applications, including regenerative medicine, 3D printing, and drug delivery. Granular hydrogels often possess low mechanical moduli and lack structural integrity due to weak physical interactions between microgels. This has been addressed through covalent inter-particle crosslinking; however, covalent crosslinking often occurs through temporal enzymatic methods or photoinitiated reactions, which may limit injectability and material processing. To address this, a hyaluronic acid (HA) granular hydrogel is developed with dynamic covalent (hydrazone) inter-particle crosslinks. Extrusion fragmentation is used to fabricate microgels from photocrosslinkable norbornene-modified HA, additionally modified with either aldehyde or hydrazide groups. Aldehyde and hydrazide-containing microgels are mixed and jammed to form adhesive granular hydrogels. These granular hydrogels possess enhanced mechanical integrity and shape stability over controls due to the covalent inter-particle bonds, while maintaining injectability due to the dynamic hydrazone bonds. The adhesive granular hydrogels are applied to 3D printing, which allows the printing of structures that are stable without any further post-processing. Additionally, the authors demonstrate that adhesive granular hydrogels allow for cell invasion in vitro. Overall, this work demonstrates the use of dynamic covalent inter-particle crosslinking to enhance injectable granular hydrogels.
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Affiliation(s)
- Victoria G Muir
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Taimoor H Qazi
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Shoshana Weintraub
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Bryan O Torres Maldonado
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Paulo E Arratia
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemical and Biological Engineering, College of Engineering and Applied Science, University of Colorado Boulder, Boulder, CO, 80303, USA
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5
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Peters JT, Wechsler ME, Peppas NA. Advanced biomedical hydrogels: molecular architecture and its impact on medical applications. Regen Biomater 2021; 8:rbab060. [PMID: 34925879 PMCID: PMC8678442 DOI: 10.1093/rb/rbab060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/22/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022] Open
Abstract
Hydrogels are cross-linked polymeric networks swollen in water, physiological aqueous solutions or biological fluids. They are synthesized by a wide range of polymerization methods that allow for the introduction of linear and branched units with specific molecular characteristics. In addition, they can be tuned to exhibit desirable chemical characteristics including hydrophilicity or hydrophobicity. The synthesized hydrogels can be anionic, cationic, or amphiphilic and can contain multifunctional cross-links, junctions or tie points. Beyond these characteristics, hydrogels exhibit compatibility with biological systems, and can be synthesized to render systems that swell or collapse in response to external stimuli. This versatility and compatibility have led to better understanding of how the hydrogel's molecular architecture will affect their physicochemical, mechanical and biological properties. We present a critical summary of the main methods to synthesize hydrogels, which define their architecture, and advanced structural characteristics for macromolecular/biological applications.
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Affiliation(s)
- Jonathan T Peters
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
| | - Marissa E Wechsler
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Nicholas A Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Surgery and Perioperative Care, and Department of Pediatrics, Dell Medical School, The University of Texas at Austin, 1601 Trinity St., Bldg. B, Austin, TX 78712, USA
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6
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In Vitro Evaluation of Biomaterials for Vocal Fold Injection: A Systematic Review. Polymers (Basel) 2021; 13:polym13162619. [PMID: 34451158 PMCID: PMC8400183 DOI: 10.3390/polym13162619] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 11/16/2022] Open
Abstract
Vocal fold injection is a preferred treatment in glottic insufficiency because it is relatively quick and cost-saving. However, researchers have yet to discover the ideal biomaterial with properties suitable for human vocal fold application. The current systematic review employing PRISMA guidelines summarizes and discusses the available evidence related to outcome measures used to characterize novel biomaterials in the development phase. The literature search of related articles published within January 2010 to March 2021 was conducted using Scopus, Web of Science (WoS), Google Scholar and PubMed databases. The search identified 6240 potentially relevant records, which were screened and appraised to include 15 relevant articles based on the inclusion and exclusion criteria. The current study highlights that the characterization methods were inconsistent throughout the different studies. While rheologic outcome measures (viscosity, elasticity and shear) were most widely utilized, there appear to be no target or reference values. Outcome measures such as cellular response and biodegradation should be prioritized as they could mitigate the clinical drawbacks of currently available biomaterials. The review suggests future studies to prioritize characterization of the viscoelasticity (to improve voice outcomes), inflammatory response (to reduce side effects) and biodegradation (to improve longevity) profiles of newly developed biomaterials.
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7
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Lipowczan A, Trochimczuk AW. Phosphates-Containing Interpenetrating Polymer Networks (IPNs) Acting as Slow Release Fertilizer Hydrogels (SRFHs) Suitable for Agricultural Applications. MATERIALS 2021; 14:ma14112893. [PMID: 34071203 PMCID: PMC8199159 DOI: 10.3390/ma14112893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 05/14/2021] [Accepted: 05/21/2021] [Indexed: 11/16/2022]
Abstract
Novel, phosphorus-containing slow release fertilizer hydrogels (SRFHs) composed of interpenetrating polymer networks (IPNs) with very good swelling and mechanical properties have been obtained and characterized. It was found that introducing organophosphorus polymer based on a commercially available monomer, 2-methacryloyloxyethyl phosphate (MEP), as the IPN’s first component network results in much better swelling properties than for a terpolymer with acrylic acid (AAc), 2-methacryloyloxyethyl phosphate (MEP) and bis[2-(methacryloyloxy)ethyl] phosphate (BMEP) when the same weight ratios of monomers are employed. The procedure described in this paper enables the introduction of much larger amounts of phosphorus into polymer structures without significant loss of water regain ability, which is crucial in the application of such materials in the agricultural field.
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8
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Caldwell AS, Aguado BA, Anseth KS. Designing Microgels for Cell Culture and Controlled Assembly of Tissue Microenvironments. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1907670. [PMID: 33841061 PMCID: PMC8026140 DOI: 10.1002/adfm.201907670] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Indexed: 05/04/2023]
Abstract
Micron-sized hydrogels, termed microgels, are emerging as multifunctional platforms that can recapitulate tissue heterogeneity in engineered cell microenvironments. The microgels can function as either individual cell culture units or can be assembled into larger scaffolds. In this manner, individual microgels can be customized for single or multi-cell co-culture applications, or heterogeneous populations can be used as building blocks to create microporous assembled scaffolds that more closely mimic tissue heterogeneities. The inherent versatility of these materials allows user-defined control of the microenvironments, from the order of singly encapsulated cells to entire three-dimensional cell scaffolds. These hydrogel scaffolds are promising for moving towards personalized medicine approaches and recapitulating the multifaceted microenvironments that exist in vivo.
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Affiliation(s)
- Alexander S. Caldwell
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
| | - Brian A. Aguado
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
| | - Kristi S. Anseth
- Department of Chemical and Biological Engineering, University of Colorado – Boulder, USA, 80303
- BioFrontiers Institute, University of Colorado – Boulder, USA, 80303
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9
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Ortiz de Solorzano I, Mendoza G, Arruebo M, Sebastian V. Customized hybrid and NIR-light triggered thermoresponsive drug delivery microparticles synthetized by photopolymerization in a one-step flow focusing continuous microreactor. Colloids Surf B Biointerfaces 2020; 190:110904. [DOI: 10.1016/j.colsurfb.2020.110904] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/10/2020] [Accepted: 02/24/2020] [Indexed: 12/28/2022]
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10
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Seong YJ, Lin G, Kim BJ, Kim HE, Kim S, Jeong SH. Hyaluronic Acid-Based Hybrid Hydrogel Microspheres with Enhanced Structural Stability and High Injectability. ACS OMEGA 2019; 4:13834-13844. [PMID: 31497700 PMCID: PMC6714525 DOI: 10.1021/acsomega.9b01475] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 07/26/2019] [Indexed: 05/09/2023]
Abstract
For hydrogel injection applications, it is important to improve the strength and biostability of the hydrogel as well as its injectability to pass easily through the needle. Making gel microspheres is one approach to achieve these improvements. Granulization of a bulk hydrogel is a common procedure used to form microsized particles; however, the nonuniform size and shape cause an uneven force during injection, damaging the surrounding tissue and causing pain to the patients. In this study, injectable hyaluronic acid (HA)-based hybrid hydrogel microspheres were fabricated using a water-in-oil emulsion process. The injectability was significantly enhanced because of the relatively uniform size and spherical shape of the hydrogel formulates. In addition, the biostability and mechanical strength were also increased owing to the increased cross-linking density compared with that of conventionally fabricated gel microparticles. This tendency was further improved after in situ calcium phosphate precipitation. Our findings demonstrate the great potential of HA-based hydrogel microspheres for various clinical demands requiring injectable biomaterials.
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Affiliation(s)
- Yun-Jeong Seong
- Department
of Materials Science and Engineering, Seoul
National University, Seoul 08826, Republic of Korea
| | - Guang Lin
- Department
of Reconstructive and Plastic Surgery, Seoul
National University Hospital, Seoul 03080, Republic
of Korea
| | - Byung Jun Kim
- Department
of Reconstructive and Plastic Surgery, Seoul
National University Hospital, Seoul 03080, Republic
of Korea
| | - Hyoun-Ee Kim
- Department
of Materials Science and Engineering, Seoul
National University, Seoul 08826, Republic of Korea
- Biomedical
Implant Convergence Research Center, Advanced
Institutes of Convergence
Technology, Suwon 16229, Republic of Korea
| | - Sukwha Kim
- Department
of Reconstructive and Plastic Surgery, Seoul
National University Hospital, Seoul 03080, Republic
of Korea
- E-mail: . Phone: +82 2 2072 3530. Fax: +82 2 3675 3680 (S.K.)
| | - Seol-Ha Jeong
- Department
of Materials Science and Engineering, Seoul
National University, Seoul 08826, Republic of Korea
- E-mail: . Phone: +82
2 880 8320. Fax: +82 2 884 1413 (S.-H.J.)
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11
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Volumetric analysis of vocal fold atrophy via magnetic resonance imaging. The Journal of Laryngology & Otology 2018; 132:822-826. [DOI: 10.1017/s0022215118001573] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractObjectiveTo quantitatively test the hypothesis that older patients have increased thyroarytenoid muscle atrophy by comparing thyroarytenoid muscle volumes across different age groups.MethodsA retrospective chart review was conducted. The study included 111 patients with no history of laryngeal pathology. Two investigators reviewed magnetic resonance imaging studies of these patients and manually traced the thyroarytenoid muscles on multiple slices bilaterally. Thyroarytenoid muscle volumes were then computed using imaging analysis software. Patients were stratified into three age groups (18–50 years, 51–64 years, and 65 years or older) for comparison.ResultsIntra- and inter-rater reliabilities were excellent for all measurements (intraclass correlation co-efficient > 0.90). There was no statistically significant difference in the mean volumes of left and right thyroarytenoid muscles in all age and gender groups.ConclusionGiven the lack of statistically significant difference in thyroarytenoid muscle volume between age groups on magnetic resonance imaging, the prevailing assumption that age-related thyroarytenoid muscle atrophy contributes to presbyphonia should be re-examined.
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Mora-Boza A, Puertas-Bartolomé M, Vázquez-Lasa B, San Román J, Pérez-Caballer A, Olmeda-Lozano M. Contribution of bioactive hyaluronic acid and gelatin to regenerative medicine. Methodologies of gels preparation and advanced applications. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.07.039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Hwang MY, Kim SG, Lee HS, Muller SJ. Generation and characterization of monodisperse deformable alginate and pNIPAM microparticles with a wide range of shear moduli. SOFT MATTER 2017; 13:5785-5794. [PMID: 28766673 DOI: 10.1039/c7sm01079f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Monodisperse particles of varying size, shape, and deformability were produced using two microfluidic strategies. For both strategies, monodisperse emulsion droplets of a crosslinkable solution were generated via flow-focusing. Subsequently, droplets were crosslinked either on chip or in an external bath. On-chip gelation resulted in spherical particles; varying the degree of crosslinking varied the deformability systematically. The optimized flow-focusing device design separated the production of monodisperse aqueous alginate droplets and the on-chip introduction of crosslinking ions. Two features were then adapted to target softer particles: the dispersed phase design and the polymer choice. The alternative design used a sheathed dispersed phase, with the polymer solution surrounding an unreactive viscous core, which generated alginate particles with a softer core. Poly(N-isopropylacrylamide) (pNIPAM) allowed access to a broad range of moduli. The resulting spherical particles were characterized using capillary micromechanics to determine the shear (G) and compressive (K) moduli. Particles with G = 0.013 kPa to 26 kPa and K = 0.221 kPa to 34.9 kPa were obtained; the softest particles are an order of magnitude softer than those previously reported. The second approach, based on earlier work by Hu et al., produced axisymmetric, non-spherical particles with fore-aft asymmetry. Alginate drops were again formed in a flow-focusing device but were crosslinked off-chip in an external gelation bath. By changing the bath viscosity, crosslinker concentration, and outlet height, the falling droplets deformed differently during gelation, resulting in a variety of shapes, such as teardrop, mushroom, and bowl shapes.
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Affiliation(s)
- Margaret Y Hwang
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA 94720, USA.
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14
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Ding X, Wang Y. Weak Bond-Based Injectable and Stimuli Responsive Hydrogels for Biomedical Applications. J Mater Chem B 2017; 5:887-906. [PMID: 29062484 PMCID: PMC5650238 DOI: 10.1039/c6tb03052a] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2023]
Abstract
Here we define hydrogels crosslinked by weak bonds as physical hydrogels. They possess unique features including reversible bonding, shear thinning and stimuli-responsiveness. Unlike covalently crosslinked hydrogels, physical hydrogels do not require triggers to initiate chemical reactions for in situ gelation. The drug can be fully loaded in a pre-formed hydrogel for delivery with minimal cargo leakage during injection. These benefits make physical hydrogels useful as delivery vehicles for applications in biomedical engineering. This review focuses on recent advances of physical hydrogels crosslinked by weak bonds: hydrogen bonds, ionic interactions, host-guest chemistry, hydrophobic interactions, coordination bonds and π-π stacking interactions. Understanding the principles and the state of the art of gels with these dynamic bonds may give rise to breakthroughs in many biomedical research areas including drug delivery and tissue engineering.
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Affiliation(s)
- Xiaochu Ding
- Department of Bioengineering and the McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
| | - Yadong Wang
- Department of Bioengineering and the McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Surgery, University of Pittsburgh, Pittsburgh, PA 15260, USA
- Department of Chemical and Petroleum Engineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, USA
- Clinical Translational Science Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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15
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La Gatta A, De Rosa M, Frezza MA, Catalano C, Meloni M, Schiraldi C. Biophysical and biological characterization of a new line of hyaluronan-based dermal fillers: A scientific rationale to specific clinical indications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 68:565-572. [PMID: 27524055 DOI: 10.1016/j.msec.2016.06.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Revised: 05/10/2016] [Accepted: 06/03/2016] [Indexed: 11/24/2022]
Abstract
Chemico-physical and biological characterization of hyaluronan-based dermal fillers is of key importance to differentiate between numerous available products and to optimize their use. These studies on fillers are nowadays perceived as a reliable approach to predict their performance in vivo. The object of this paper is a recent line of hyaluronic acid (HA)-based dermal fillers, Aliaxin®, available in different formulations that claim a complete facial restoration. The aim of the study is to provide biophysical and biological data that may support the clinical indications and allow to predict performance possibly with respect to similar available products. Aliaxin® formulations were tested for their content in soluble HA, water uptake capacity, rheological behavior, stability to enzymatic degradation, and for in vitro capacity to stimulate extracellular matrix components production. The formulations were found to contain a low amount of soluble HA and were equivalent to each other regarding insoluble hydrogel concentration. The different crosslinking degree declared by the producer was consistent with the trend in water uptake capacity, rigidity, viscosity. No significant differences in stability to enzymatic hydrolysis were found. In vitro experiments, using a full thickness skin model, showed an increase in collagen production in the dermoepidermal junction. Results support the claims of different clinical indications, the classification of products regarding hydro-, lift-action and the specifically suggested needle gauge for the delivery. The biological outcomes also support products effectiveness in skin structure restoration. These data predicted a better performance regarding hydro-action, tissue integration, clinical management during delivery, and a high durability of the aesthetic effect when compared to data on marketed similar products.
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Affiliation(s)
- Annalisa La Gatta
- Department of Experimental Medicine, Section of Biotechnology, Medical Histology and Molecular Biology, Bioteknet Second University of Naples, Via L. De Crecchio 7, 80138 Naples, Italy.
| | - Mario De Rosa
- Department of Experimental Medicine, Section of Biotechnology, Medical Histology and Molecular Biology, Bioteknet Second University of Naples, Via L. De Crecchio 7, 80138 Naples, Italy
| | - Maria Assunta Frezza
- Department of Experimental Medicine, Section of Biotechnology, Medical Histology and Molecular Biology, Bioteknet Second University of Naples, Via L. De Crecchio 7, 80138 Naples, Italy
| | - Claudia Catalano
- Department of Experimental Medicine, Section of Biotechnology, Medical Histology and Molecular Biology, Bioteknet Second University of Naples, Via L. De Crecchio 7, 80138 Naples, Italy
| | - Marisa Meloni
- VitroScreen, In Vitro Research Laboratories, 103, Via Mosè Bianchi, 20149 Milan, Italy
| | - Chiara Schiraldi
- Department of Experimental Medicine, Section of Biotechnology, Medical Histology and Molecular Biology, Bioteknet Second University of Naples, Via L. De Crecchio 7, 80138 Naples, Italy.
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Green robust pH–temperature-sensitive maleated poly(vinyl alcohol)-g-gelatin for encapsulated capsaicin. Polym Bull (Berl) 2016. [DOI: 10.1007/s00289-016-1609-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Qureshi UA, Gubbuk IH, Ersoz M, Solangi AR, Taqvi SI, Memon SQ. A comparative study and evaluation of magnetic and nonmagnetic hydrogels towards mitigation of di butyl and di ethyl hexyl phthalate from aqueous solutions. J Taiwan Inst Chem Eng 2016. [DOI: 10.1016/j.jtice.2015.09.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Massensini AR, Ghuman H, Saldin LT, Medberry CJ, Keane TJ, Nicholls FJ, Velankar SS, Badylak SF, Modo M. Concentration-dependent rheological properties of ECM hydrogel for intracerebral delivery to a stroke cavity. Acta Biomater 2015; 27:116-130. [PMID: 26318805 PMCID: PMC4609617 DOI: 10.1016/j.actbio.2015.08.040] [Citation(s) in RCA: 95] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Revised: 08/13/2015] [Accepted: 08/25/2015] [Indexed: 01/09/2023]
Abstract
Biomaterials composed of mammalian extracellular matrix (ECM) promote constructive tissue remodeling with minimal scar tissue formation in many anatomical sites. However, the optimal shape and form of ECM scaffold for each clinical application can vary markedly. ECM hydrogels have been shown to promote chemotaxis and differentiation of neuronal stem cells, but minimally invasive delivery of such scaffold materials to the central nervous system (CNS) would require an injectable form. These ECM materials can be manufactured to exist in fluid phase at room temperature, while forming hydrogels at body temperature in a concentration-dependent fashion. Implantation into the lesion cavity after a stroke could hence provide a means to support endogenous repair mechanisms. Herein, we characterize the rheological properties of an ECM hydrogel composed of urinary bladder matrix (UBM) that influence its delivery and in vivo interaction with host tissue. There was a notable concentration-dependence in viscosity, stiffness, and elasticity; all characteristics important for minimally invasive intracerebral delivery. An efficient MRI-guided injection with drainage of fluid from the cavity is described to assess in situ hydrogel formation and ECM retention at different concentrations (0, 1, 2, 3, 4, and 8mg/mL). Only ECM concentrations >3mg/mL gelled within the stroke cavity. Lower concentrations were not retained within the cavity, but extensive permeation of the liquid phase ECM into the peri-infarct area was evident. The concentration of ECM hydrogel is hence an important factor affecting gelation, host-biomaterial interface, as well intra-lesion distribution. STATEMENT OF SIGNIFICANCE Extracellular matrix (ECM) hydrogel promotes constructive tissue remodeling in many tissues. Minimally invasive delivery of such scaffold materials to the central nervous system (CNS) would require an injectable form that exists in fluid phase at room temperature, while forming hydrogels at body temperature in a concentration-dependent fashion. We here report the rheological characterization of an injectable ECM hydrogel and its concentration-dependent delivery into a lesion cavity formed after a stroke based on MRI-guidance. The concentration of ECM determined its retention within the cavity or permeation into tissue and hence influenced its interaction with the host brain. This study demonstrates the importance of understanding the structure-function relationship of biomaterials to guide particular clinical applications.
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Affiliation(s)
- Andre R Massensini
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Radiology, Pittsburgh, PA, USA; Universidade Federal de Minas Gerais, Department of Physiology and Biophysics, Belo Horizonte, Brazil
| | - Harmanvir Ghuman
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA
| | - Lindsey T Saldin
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA
| | - Christopher J Medberry
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA
| | - Timothy J Keane
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA
| | - Francesca J Nicholls
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Radiology, Pittsburgh, PA, USA; King's College London, Department of Neuroscience, London, UK
| | - Sachin S Velankar
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Chemical Engineering, Pittsburgh, PA, USA
| | - Stephen F Badylak
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA; University of Pittsburgh, Department of Surgery, Pittsburgh, PA, USA
| | - Michel Modo
- University of Pittsburgh, McGowan Institute for Regenerative Medicine, Pittsburgh, PA, USA; University of Pittsburgh, Department of Bioengineering, Pittsburgh, PA, USA; University of Pittsburgh, Department of Radiology, Pittsburgh, PA, USA.
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Bhardwaj N, Rajkhowa R, Wang X, Devi D. Milled non-mulberry silk fibroin microparticles as biomaterial for biomedical applications. Int J Biol Macromol 2015; 81:31-40. [DOI: 10.1016/j.ijbiomac.2015.07.049] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 01/15/2023]
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Gaston J, Bartlett RS, Klemuk SA, Thibeault SL. Formulation and characterization of a porous, elastomeric biomaterial for vocal fold tissue engineering research. Ann Otol Rhinol Laryngol 2014; 123:866-74. [PMID: 24944281 PMCID: PMC4237652 DOI: 10.1177/0003489414539131] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Biomaterials able to mimic the mechanical properties of vocal fold tissue may be particularly useful for furnishing a 3-dimensional microenvironment allowing for in vitro investigation of cell and molecular responses to vibration. Motivated by the dearth of biomaterials available for use in an in vitro model for vocal fold tissue, we investigated polyether polyurethane (PEU) matrices, which are porous, mechanically tunable biomaterials that are inexpensive and require only standard laboratory equipment for fabrication. METHODS Rheology, dynamic mechanical analysis, and scanning electron microscopy were performed on PEU matrices at 5%, 10%, and 20% w/v mass concentrations. RESULTS For 5%, 10%, and 20% w/v concentrations, shear storage moduli were 2 kPa, 3.4 kPa, and 6 kPa, respectively, with shear loss moduli being 0.2 kPa, 0.38 kPa, and 0.62 kPa, respectively. Storage moduli responded to applied frequency as a linear function. Mercury intrusion porosimetry revealed that all 3 mass concentrations of PEU have a similar overall percentage porosity but differ in pore architecture. CONCLUSION Twenty-µm diameter pores are ideal for cell seeding, and a range of mechanical properties indicates that the lower [corrected] mass concentration PEU formulations are best suited for mimicking the viscoelastic properties of vocal fold tissue for in vitro research.
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Affiliation(s)
- Joel Gaston
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Rebecca S Bartlett
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sarah A Klemuk
- Department of Communication Sciences and Disorders, University of Iowa, Iowa City, Iowa, USA
| | - Susan L Thibeault
- Department of Biomedical Engineering, University of Wisconsin-Madison, Madison, Wisconsin, USA Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, University of Wisconsin-Madison, Madison, Wisconsin, USA
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